Seat sill



SEAT SILL Filed July 16, 1934 mbe@ War'n BIO Patented Oct. 6, 1936 UNITED STATES PATENT OFFICE 2,056,230 SEAT sILL Application July 16, Y

3V Claims.

This invention relates to railway cars, or similar vehicles, and has for its principal object to provide a longitudinal framing member for interiorly connecting the side posts, the member being of such shape that not only is the entire car body stiffened, particularly against side impact, but in addition, the member provides a convenient support and place of anchorage for the seat pedestals.

Further and other objects and advantages will become apparent as the disclosure proceeds and the description is read in conjunction with the accompanying drawing, in which Fig. l is a perspective view more or less diagrammatic of body framework illustrating the car frame to which the seats, seat sills and seat stringers are adapted to be applied.

Fig. 2 is a fragmentary, sectional View taken through the car body;

Fig. 3 is a perspective view of the seat pedestal mounting, the seat sill being shown spaced from the seat Stringer for the purpose of clarity;

Fig. 4 is a fragmentary, perspective View showing the application of the interior nish to the belt rail;

Fig. 5 is a fragmentary, sectional view showing the manner in which the interior finish is applied to the seat sill and seat Stringer.

But this specific illustration is for the purpose of disclosure only and the appended claims should be construed as broadly as the prior art will permit.

In the illustrative embodiment of the invention, the car framework consists of a center sill I3, end sills Il and i2 secured to opposite ends of the center sill, door end posts i3 and I4, and i5 and I6, rising from the end sills l l and I2, respectively, top anti-telescoping plates Il and i8, which rest upon the door end posts, and top sills I9 and 23 supported by the end posts and connected at the top and bottom b-y plates 2 i and 22 which with the top sills form a box girder extending from one end of the car to the other. All of these structural members are preferably made of aluminum alloy, and together constitute the main framework of the car.

The shell of the car is formed by a plurality of curved ribs 23 which extend from the top sills I9 and 23 to the upper portion of the center sill l0. rIhe ribs lie in vertical planes and are connected together by various longitudinal framing members, such as a roof Stringer 24, a window header stringer 25, a belt rail 26, a seat Stringer 2l, a seat sill generally designated 28,

V1934, Serial No. 735,361

a side sill 29, and a plurality offloor stringers including an inverted channel 30.

The belly of the car is formed by arcuate bars 3l which extend from the side sills 29 to the bottom of the center sill lil. AThese bars are strengthened by struts 32 and 33.

A metal skin 34 is applied to the exterior of the skeleton framework, as shown in Figs. 2 and 4.

The seat sills 28 are preferably formed in one piece and when made of aluminum alloy, the extrusion process of fabrication is preferably employed. The seat sills, however, as well as the other structural members, may be made of high tensile Steel, or other suitable material, and certain objects of this invention are achieved even when the seat sills are made in more than one piece.

The seat stringers in the embodiment of the invention shown have top and bottom flanges 35 and 36, respectively, which are adapted to be riveted or otherwise secured to the side posts or ribs 23, and the intermediate portion of the Stringer consists of steps 3l and 38, the latter being flanked at the bottom by a stub flange 39.

Seat sills 28 nest with the seat stringers 21 and each comprises a bottom angle portion consisting of a vertical ange 40, a horizontal flange 4I, and an inwardly extending offset or U -shape portion 42 having a longitudinal flange 43 offset from the flange which mates with the groove formed by the step 38 of the seat strnger and the stub ange 39 which flanks it. The flange 40 of the seat sill is secured to the side posts or ribs 23 by rivets or other suitable means, and rivetsr44 fasten the seat sills to the seat stringers. It will be observed that very little shear is placed on the rivets 44 due to the interlocking tongue and groove joint between the seat sills and the seat stringers.

The combination of the seat sill and the seat Stringer, interlocked as they are, forms a rigid girder which is capable not only of resisting vertical bending but also horizontal bending. The resistance to horizontal bending is particularly important in case an object strikes the side of the car.

The interior nish consisting of a sheet 45 of plywood, or other suitable material, fits against the vertical web 42 of the seat sill and the step 31 of the seat Stringer, and is secured in place by machine screws 46. At the top, the nish is secured to the belt rail 26,'the latter being provided with a longitudinal inset 4l so that the finish sheet is iiush with the belt rail (Fig. 4). The window sill is indicated at 4B.

'I'he horizontal Iiange 4I of the seat sill forms a ledge upon which the seat pedestals 49 are conveniently supported and secured in place. The pedestals may be of any suitable type and are here shown as T-shaped and hollow, the leg portion 5D being secured to the floor channel 3!! by vbrackets 5l and 52. The arm 53 of the pedestal rests upon the ledge 4I and alcuts` the finish sheet (Fig. 5). It is secured to the ledge by rivets 54, or other suitable means.

A bottom finish sheet covers the portion ot the car structure below the seat sills.

What I claim is:-

1. In a car having a side wall structure, a seat.Y

ed to support the outer end of a seat pedestal and` said sill and stringers being rigidly connected to said side Wall structure.

2. In a car having upstandingribsfat the sides thereof, a seat Stringer member adapted to be attached to the ribs of said car and extend along one side thereof, a. seat sill member having a ledge thereon for supporting the outer end of a seat, one of said members having a groove extending longitudinally thereof and the other a tongue for engaging said groove, and means extending through said members for connecting the same together with said tongue inl said groove whereby shearing of said means is prevented when Weight is applied to said seat.

V3. In a car having a side wall comprising a plurality of side posts, the combination of a seat Stringerl and a seat sill, said sill and Stringer having attaching anges adapted to be attached to said posts, andhaving oiset interconnecting portions for resisting the inward bending of said wall, means for connecting said sill to said Stringer for holding said offset interconnecting portions 'interengaged whereby said means will be relieved of shearing stress whenweight is appliedto said sill, and means integral with said seat sill for, sup.` porting theouter. end of. a seat, from said sill.

P. BLOMBERG. 

